Hello everyone!

We have been investing plenty of personal time and energy for many years to share our knowledge with you all. However, we now need your help to keep this blog running. All you have to do is just click one of the adverts on the site, otherwise it will sadly be taken down due to hosting etc. costs. Thank you.

Example below shows us how to send emails with Swiftmailer. We're going to use Mailtrap which is a free and great dummy email testing tool.


Parametres.yml


If you don't use Mailtrap settings below, emails won't be triggered but you can still see the email in symfony profiler. If you use Mailtrap settings like we do, you'll see the emails in Mailtrap inbox.


parameters:

# mailer_transport: smtp
# mailer_host: 127.0.0.1
# mailer_user: null
# mailer_password: null
# mailer_noreply:
# - noreply@mydomain.com

mailer_transport: smtp
mailer_host: mailtrap.io
mailer_user: 301048d74474739u1
mailer_password: ed9a12310a297t
mailer_auth_mode: cram-md5
mailer_port: 2525
mailer_noreply:
- noreply@mydomain.com

Config.yml or Config_dev.yml


This would send the email in normal environment.


swiftmailer:
transport: "%mailer_transport%"
host: "%mailer_host%"
username: "%mailer_user%"
password: "%mailer_password%"
auth_mode: "%mailer_auth_mode%"
port: "%mailer_port%"
spool: { type: memory }

Config_test.yml


This would create football/app/cache/test/email/spool/default/HolnCItlkD.message file containing the details of email in test environment.


swiftmailer:
disable_delivery: true
spool:
type: file
path: %kernel.cache_dir%/email/spool

Services.yml


services:
application_frontend.util.mailer:
class: Application\FrontendBundle\Util\Mailer
arguments:
- @mailer
- @templating
- @logger
- %mailer_noreply%

Services.yml


services:
application_frontend.service.default:
class: Application\FrontendBundle\Service\AccountService
arguments:
- @application_frontend.util.mailer

Mailer.php


namespace Application\FrontendBundle\Util;

use Psr\Log\LoggerInterface;
use Swift_Mailer;
use Swift_Message;
use Swift_RfcComplianceException;
use Symfony\Bundle\FrameworkBundle\Templating\EngineInterface;

class Mailer implements MailerInterface
{
private $mailer;
private $templating;
private $logger;
private $noreply;

public function __construct(
Swift_Mailer $mailer,
EngineInterface $templating,
LoggerInterface $logger,
array $noreply
) {
$this->mailer = $mailer;
$this->templating = $templating;
$this->logger = $logger;
$this->noreply = $noreply;
}

public function sendRegistration(array $to)
{
$body = $this->templating->render(
'ApplicationFrontendBundle:Mailer:registration.txt.twig', ['signature' => 'inanzzz']
);

$this->send($to, 'Registration confirmation!', $body, 'registration');
}

private function send($to, $subject, $body, $messageId)
{
$failedRecipients = [];

$message = Swift_Message::newInstance()
->setSubject($subject)
->setFrom($this->noreply)
->setTo($to)
->setBody($body, 'text/html');
$message->getHeaders()->addTextHeader('X-Message-ID', $messageId);

try {
$this->mailer->send($message, $failedRecipients);
} catch (Swift_RfcComplianceException $e) {
$this->logger->critical(
sprintf(
'Failed to send email to recipients [%s] with message: %s',
implode(', ', $failedRecipients),
$e->getMessage()
)
);
}
}
}

AccountService.php


namespace Application\FrontendBundle\Service\AccountService;

use Application\FrontendBundle\Util\MailerInterface;

class AccountService implements AccountServiceInterface
{
private $mailer;

public function __construct(MailerInterface $mailer)
{
$this->mailer = $mailer;
}

public function sendEmail()
{
$this->mailer->sendRegistration(['customer@customer.com']);
}
}

Registration.txt.twig


<h3>Registration</h3>
<br />
<p>Hello,</p>
<br />
<p>Thank you for registering with us.</p>
<br />
<p>{{ signature }}</p>

Result


Symfony profiler



Mailtrap inbox



Mailtrap settings